Chemical properties of an atom are based upon the arrangement of valence electrons (electrons which can be gained, lost, or shared).
I think the answer is <span>B. The sun's gravitational pull on Planet A is equal to its gravitational pull on Planet B because distance does not affect gravity.
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Answer:Um... I think 5000 i am not really sure
Explanation: I Dont Really Know
C is the answer because animals and plants need water.